Combined rule



w w W. HuHqGARRITT COMBINED RULE, BEVEL, AND SQUARE.

N0. 50:1,341. Patented Sept. 5, 1893.

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-1! I I1 I -l UNITED STATES PATENT OFFICE.

WILLIAM H. H. GARRITT, OF DES MOINES, IOWA.

COMBINED RULE, BEVEL, AND SQUARE.

SPECIFICATION forming part of Letters Patent No. 504,341, datedSeptember 5, 1893. Application filed December 13, 1892. 7 Serial No.456,014. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM H. H. GAR- RITT, a citizen of the UnitedStates of America, residing at Des Moines, in the county of Polk andState of Iowa, have invented a Folding Rule, Bevel, and Square Combined,of which the following is a specification.

My invention consists in the construction of a folding rule, in theconstruction of a bevel and square and in the manner of combining thetwo so that one will not interfere with the operation of the other, andso that both may be folded together to occupy a minimum of space ashereinafter more specifically set forth, pointed out in my claims andillustrated in the accompanying drawings in Which- Figure l is a top orplan view of a complete folding rule, bevel, and square, in a foldedposition. Fig. 2 is a longitudinal sectional view through the centralportion of Fig. 1. Fig. 3 is a top view of a part of the folding ruleand the bevel and square fixed in a position at right angles thereto.The dotted lines show the bevel and square in a difierent positionrelative to the rule. Figs. 4 and 5 are perspective views of parts ofthe compass hinge which connects the two central pieces of the rule.Fig. 6 is a transverse sectional View through the central portion of thecomplete device in a folded position.

Referring to the accompanying drawings the reference letter A is used todesignate a folding rule, composed of four sections, the two centralones of whichare hinged to each other to move laterally'afijd the endsections hinged to the central ones at the point A to swing in a planeat right angles thereto in the ordinary manner. The aforesaid centralpieces are connected by means of a compass joint one part of which B isattached to one rule section and has the integral journals B projectingfrom its side.

B B are two mating pieces fixed to the remaining rule section andprovided with open ings to admit the said iutegraljournals B Cdesignates a screw-threaded bore extended through the part B of thecompass joint at the approximate ends of the rule sections.

D designates a fiat straight metal strip having a scale marked thereuponand a concen trically bored circular formation D formed on its innercorner. This part D is placed upon the inner surface of one of thecentral pieces of the rule and a part of one of the rule sections isremoved to allow the said part D to be folded between the upperand undersections of the rule and to lie flat therein.

D designates a lever having a portion D bent at right angles andprovided with an annular shoulder D and screw threaded throughout theremainder of its length. This screw threaded portion is first extendedthrough the bore in the part D then screwed into the screw threaded bore0, the lever proper being of such a size and shape that it may be placedparallel with the end of one of the rule sections and the screw-threadedportion is so arranged that the lever will be in a position parallelwith the end of one of the rule sections when the portion D is securelyclamped thereby. It will now be obvious that the bevel or square ispractically connected with but one piece of the folding rule so thatwhen the bevel is not in use it lies parallel with said section and doesnot interfere with the use of the rule.

The operation of the bevel and square is as follows: The lever D ismoved away from the end of the rule sections to thereby unscrew the partD and raise the shoulder D above the bevel and square to loosen thesame. It is then placed inany desirable position relative to the ruleeither at right angles to serve as a square or at any other angle toserve as a bevel and the lever again placed in a position parallel withthe ends of the rule sections to securely clamp the bevel or square inits position.

The rule and bevel andsquare are both provided with the usual scale -as.shown in the drawings.

Having thus described the construction and function of the device, whatI claim as my invention, and desire to secure by Letters Patent of theUnited States therefor, is-

1. In combination with a folding rule consisting of a plurality ofsections the central ones of which are connected by means of a compassjoint substantially as shown, a flat metal bevel or square adapted tolie fiat upon one of the sections a bore in the end of said bevel orsquare, a screw-threaded bore extended through the solid portion of thecompass joint, and a lever having the annular shoulder and screwthreaded portion substantially as set forth extended through the bore inthe bevel and square and screwed into the solid portion of the compassjoint for the purposes stated.

2. A folding rule bevel and square combined comprising a rule having twoor more sections a hinge for connecting the central sections thereofcomposed of a circular formation having integral journals on its sidefaces and adapted to be fixed to one rule section and two mating plateshaving openings to receive said journals fixed to opposite sides of theremaining rule section, a screw threaded bore extended through the solidhinge section a bevel or square having abore at its one end as set forthand a bent lever having an annular shoulder and a screw threaded portionfor the purposes stated.

3. A folding rule bevel and square combined comprising a rule composedof four sections the inner ones connected by means of the compass jointconsisting of the partB having the integral journals B a screw threadedbore extended through the said journals B a bevel and square having abore extended through one of its ends and adapted to lie parallel withthe inner face of the rule section having the solid hinge section, and abent lever having an annular shoulder formed thereon and screw threadedto enter the bore in the solid portion of the hinge section adapted tobe placed in said screw-threaded bore and lie parallel with the ends ofthe rule sections substantially in the manner set forth.

WILLIAM H. II. GARRITT.

Witnesses:

W. J. SANKEY, THOMAS G. ORWIG.

